Security readout for executives and security teams
Plain-English summary
This is a low-severity Bluetooth vulnerability in BlueKitchen BTstack before 1.8.1. A nearby attacker with a paired Bluetooth Classic connection could cause some embedded or resource-constrained devices to crash. The provided sources do not indicate data theft, remote internet exposure, or active exploitation.
Executive priority
Handle through normal patch and firmware maintenance. Escalate only for safety-critical, highly available, or widely deployed Bluetooth products where a local crash would disrupt operations.
Technical view
CVE-2026-28526 is a CWE-125 out-of-bounds read in BTstack AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES and VALUES response handlers. An attacker-controlled count in a VENDOR_DEPENDENT response can make parsing read beyond the L2CAP receive buffer. Reported impact is availability loss; CVSS v3.1 score is 3.5.
Likely exposure
Exposure is most likely in products embedding BlueKitchen BTstack before 1.8.1 with Bluetooth Classic AVRCP Controller functionality enabled. The attack requires nearby Bluetooth range and a paired connection, reducing broad enterprise exposure.
Exploitation context
The CVE is not listed as KEV in the bundle. The provided sources describe a nearby paired Bluetooth scenario and potential crash, but do not report public exploitation or weaponized use.
Researcher notes
Evidence supports an availability-focused out-of-bounds read, not confidentiality or integrity impact. The affected-version metadata in the bundle is inconsistent, but title, description, and patch reference identify BTstack versions before 1.8.1 as relevant.
Mitigation direction
- Upgrade BTstack to version 1.8.1 or later where directly maintained.
- For embedded products, request firmware guidance from the device vendor.
- Prioritize devices using Bluetooth Classic AVRCP Controller functionality.
- Track vendor advisories for product-specific fixes or mitigations.
Validation and detection
- Inventory products and firmware that embed BlueKitchen BTstack.
- Confirm whether deployed BTstack versions are older than 1.8.1.
- Check whether Bluetooth Classic AVRCP Controller features are enabled.
- Review vendor firmware release notes for CVE-2026-28526 coverage.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-28526 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 3.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
2 official scoresWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L2.11.4VulnCheckCVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
2.1LowVector: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Base CVSS 3.1 score
3.5LowVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/bluekitchen/btstack/releases/tag/v1.8.1CVE reference, VulnCheck · release-notes, patch
- https://www.vulncheck.com/advisories/bluekitchen-btstack-avrcp-controller-list-player-application-setting-handlers-oob-readCVE reference, VulnCheck · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.